Table 1 WISC study activity schedule

Eligibility

X

Consent

X

Medical record extraction

X

X

X

X

Respiratory illness symptom diary

X

Questionnaires

 Prenatal

X

 Postnatal

X

X

X

 Infant feeding and diet

X

X

X

X

X

 Child diet

X

X

 Respiratory allergy

X

X

X

X

X

X

 Occupational exposures

X

Personal samples

 Vaginal swab

X

 Blood collection

X^a

X

X

 Nasal swab

X

X

X

X^b

X

 Stool

X

X

X

 Skin

X

X

X

 Saliva

X

X

X

 Urine

X

X

X

 Breast milk

X

 Nasal swab (viral)

X

 Nasal brushing

X

Environmental samples

 Dust (settled (incl barn dust, if applicable)

X

X

X

 Dust (vacuum)

X

 Drinking water

X

X

X

 Farm milk

X

X